Title :
Use of LD-pumped erbium-doped fiber preamplifiers with optimal noise filtering in a FDMA-FSK 1 Gb/s star network
Author :
Willner, A.E. ; Desurvire, E. ; Presby, H.M. ; Edwards, C.A. ; Simpson, J.R.
Author_Institution :
AT&T Bell Lab., Holmdel, NJ, USA
Abstract :
An erbium-doped fiber amplifier was implemented in a closely spaced FDMA-FSK (frequency-division-multiple-access-frequency-shift-keyed) optical star network with a signaling rate of 1 Gb/s per channel. The fiber preamplifier, which is laser-diode pumped, increases the sensitivity of the direct-detection avalanche photodiode (APD) receiver by 14 dB, allowing for an increased number of network users. This enhanced sensitivity nearly corresponds to all of the available gain of the amplifier. Furthermore, the amplifier noise is optimally filtered by means of a wide band interference filter cascaded with a narrow band fiber Fabry-Perot filter.<>
Keywords :
erbium; fibre lasers; frequency division multiple access; frequency shift keying; optical communication equipment; optical links; preamplifiers; 1 Gbit/s; amplifier noise; direct-detection avalanche photodiode; fiber preamplifiers; frequency-division-multiple-access-frequency-shift-keyed; laser-diode pumped; narrow band fiber Fabry-Perot filter; network users; optical receivers; optimal noise filtering; sensitivity; signaling rate; star network; wide band interference filter; Erbium-doped fiber amplifier; Erbium-doped fiber lasers; Frequency; Optical fiber networks; Optical filters; Optical pumping; Optical receivers; Optical sensors; Preamplifiers; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
